MESON Chess Problem Database

Problem Display
PID: 226513 (6N1/p6n/Rb2Rp2/5k1p/3p3P/3K1B2/2Q1N3/8 w - - 0 1)

Prideaux, Henry Maxwell

English Mechanic and World of Science, 1878

(First published on Fri May 24 1878)

6N1/p6n/Rb2Rp2/5k1p/3p3P/3K1B2/2Q1N3/8

#2

8 + 7

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Kxd4#
      • 2.Se7#
    • 1...Bc7
      • 2.Kxd4#
      • 2.Se7#
    • 1...Bd8
      • 2.Kxd4#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Se7#
        • 2.Qe4#
      • 1...Bc5
        • 2.Qe4#
      • 1...Bd8
        • 2.Qe4#
      • 1...Sg5
        • 2.Se7#
      • 1...Kg6!
  • Keys
    • 1.Qc7!
      • 1...Kxe6
        • 2.Sxd4#
      • 1...Kg6
        • 2.Be4#
      • 1...Bxc7
        • 2.Se7#
      • 1...Bc5
        • 2.Qxh7#
      • 1...Ba5
        • 2.Se7#
        • 2.Qxh7#
      • 1...Sg5
        • 2.Rxf6#
      • 1...Sf8
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(d);::QAB(A)+K(C),XP(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAB1(A)
        • S(g);::S(H)
      • Refutation
        • K(b);P_SPINP(e),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P_SPINB(d),S_FLIGHT,XR(G)::S(B),XP(a)
      • K(b);P_SPINP(e),S_FLIGHT::B(D)
      • B(d);XQ(A)::S(H)
      • B(d);::QAB(A),XS(g)
      • S(g);N_GUARD::R1(G),XP(e)
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